CN110451662A - A wind cap driven aerobic reaction sewage treatment device and method - Google Patents

Abstract

An air cap driven aerobic reaction sewage treatment device and method, belonging to the technical field of sewage treatment. A hood-driven aerobic reaction sewage treatment device includes a septic tank and a hood-driven aerobic reactor, and the hood-driven aerobic reactor includes a tank body, an air outlet pipe, an air inlet pipe, a packing layer, a porous dropboard and The baffle plate, the tank body is arranged below the ground, the air outlet pipe and the air inlet pipe are respectively vertically arranged and communicated with the tank body, the upper ends of the air outlet pipe and the air inlet pipe protrude from the ground, and the porous drain board is horizontally arranged inside the tank body, The packing layer is arranged on the top of the porous drain plate, and the septic tank communicates with the packing layer through pipes. The pipe opening out of the ground is provided with a wind cap. After the sewage is treated by the wind cap-driven aerobic reaction sewage treatment device, the effluent COD and ammonia nitrogen are lower than 100 and 15mg/L, which meets the discharge standards of rural domestic sewage in many places.

Description

A wind cap driven aerobic reaction sewage treatment device and method

technical field

The invention belongs to the technical field of sewage treatment, and in particular relates to a wind cap-driven aerobic reaction sewage treatment device and method.

Background technique

With the rapid development of my country's economy and the implementation of the strategic layout of beautiful villages, it is imminent to efficiently treat rural sewage, which is also an effective measure to improve the living environment of villagers.

At present, in the treatment of urban domestic sewage in my country, the traditional anaerobic-anoxic-aerobic (commonly known as AAO) process and circulating activated sludge (commonly known as CASS) process are mostly used to achieve the removal of organic matter (calculated as COD) and nitrogen and phosphorus. . However, for rural sewage, there are problems such as too small water volume, large fluctuations in water volume, and weak operation capacity of residents. It is difficult for rural residents to send special personnel to maintain such small-volume sewage facilities. If the above-mentioned traditional AAO or CASS sewage treatment process is selected, then Downtime of treatment facilities due to maintenance difficulties.

The collection and treatment of sewage in villages has its own distinctive features. For example, the villagers live in a scattered manner. Such scattered residential characteristics lead to large investment in pipeline projects that are collected by pipelines and then treated centrally. A model that combines local centralized collection and treatment (such as close to the village arterial road) and local household collection and treatment.

Considering the weak maintenance ability and economic affordability of rural residents, it is necessary to develop household sewage treatment devices that consume less electricity and have near-zero maintenance.

Contents of the invention

The first purpose of the present invention is to solve the technical demand for near-zero maintenance of small-volume sewage. The present invention provides a hood-driven aerobic reaction sewage treatment device.

The second object of the present invention is to provide a sewage treatment method using an air cap to drive an aerobic reaction sewage treatment device.

In order to achieve the above object, the technical scheme that the present invention takes is as follows:

A hood-driven aerobic reaction sewage treatment device, comprising a septic tank arranged below the ground and a hood-driven aerobic reactor, the hood-driven aerobic reactor including a tank body, an air outlet pipe, an air inlet pipe, and a packing layer , a porous drainboard and a baffle, the tank body is arranged below the ground, the air outlet duct and the air inlet duct are respectively vertically arranged and communicated with the tank body, the upper ends of the air outlet duct and the air inlet duct protrude from the ground, and the The porous downboard is horizontally arranged inside the tank body, the packing layer is arranged above the porous downboard, the septic tank communicates with the packing layer through pipes, and the baffle is fixed on the right end of the upper surface of the porous downboard and connected to the The upper side wall of the tank body and the front and rear side walls are connected, and the air outlet pipe protruding from the ground is provided with a hood, and the hood rotates under the action of natural wind, and the air sucked into the air inlet pipe passes through the porous drain board in turn The through hole II and the packing layer are discharged through the air outlet pipe.

Further, the hood-driven aerobic reactor also includes a drainpipe, which is connected to the tank body and located under the porous falling water plate.

Further, the hood-driven aerobic reactor also includes a pre-oxygenation tank, the pre-oxygenation tank is arranged at the left end of the tank body, and the inside of the pre-oxygenation tank is vertically provided with an air-filling tank protruding above the ground. The inflatable pipe is connected to the air pump, the side wall of the pre-oxygenation tank is provided with a water inlet and a water outlet, the water inlet is connected to the septic tank through the water pipe I, and the water outlet is connected to the water distribution pipe , the water distribution pipes are evenly arranged on the upper part of the packing layer.

Further, the electric drive of the air pump is driven by electricity generated by solar panels.

Further, the hood-driven aerobic reactor also includes a support plate, the support plate is vertically arranged on the right end of the lower surface of the porous falling water plate and connected with the lower side wall and the front and rear side walls of the tank body, and the support plate is provided with There are several through holes I.

Further, the filler of the filler layer includes one or a combination of crushed stone and spherical organic filler, and the diameter of the filler is larger than the diameter of the through hole II on the porous falling water plate.

Further, the spherical organic filler includes a flocculent organic material and/or an integral porous hollow spherical material placed inside a porous thin-layer sphere.

Further, the filler of the filler layer also includes biological flora.

A kind of sewage treatment method that utilizes described a kind of wind cap to drive aerobic reaction sewage treatment device, comprises the following steps:

Step 1: Sewage is discharged into the septic tank. After solid-liquid separation, the sewage flows into the packing layer of the aerobic reactor driven by the wind cap through the pipeline through its own gravity, and the packing layer of the packing layer contacts with the sewage to form a biofilm;

Step 2: The hood rotates under the action of natural wind from the outside, and the air sucked into the air inlet pipe passes through the through hole II of the porous waste plate and the packing layer in turn, and is discharged through the air outlet pipe, and the biofilm is in full contact with the sewage and air , the microorganisms on the biofilm and the organic matter in the sewage undergo an aerobic reaction to complete the purification of the sewage;

Step 3: The purified sewage moves downward in the form of a water film, enters the clean water area through the porous drain plate, and is discharged through the drain pipe.

Further, in step 1, the specific flow direction of the sewage flowing into the filling layer of the hood-driven aerobic reactor through the pipeline through its own gravity is: the sewage flows into the pre-oxygenation tank of the hood-driven aerobic reactor through the water pipe I through its own gravity , the air pump oxygenates the sewage in the pre-oxygenation tank through the inflation pipe, and the oxygenated sewage flows evenly into the packing surface of the packing layer through the water distribution pipe.

The beneficial effect of the present invention relative to prior art is:

The invention proposes a wind cap-driven aerobic reaction sewage treatment device for treating effluent from a septic tank. The device uses natural wind to provide oxygen for biofilms, and a solar-powered air pump assists oxygen supply. The device consists of a septic tank and a hood-driven aerobic reactor. After the solid-liquid separation in the septic tank, the domestic sewage flows into the hood-driven aerobic reactor by its own weight. There will be air inhaled by the rotation of the hood and air assisted by the air pump in the gaps of the packing. The biofilm on the surface of the packing will contact the sewage and air to complete the aerobic reaction, and the pollutants will be removed. The purified sewage will enter the clean water area through the porous falling water plate. Row. The hood-driven aerobic reactor is the main pollutant degradation area. The reactor treats the effluent of the septic tank. The biofilm of the filling layer of the hood-driven aerobic reactor is completed by the natural wind inhaled by the hood and the auxiliary wind driven by the solar energy pump. oxygen reaction.

After the sewage is treated by the hood-driven aerobic reaction sewage treatment device, the COD and ammonia nitrogen of the effluent can be guaranteed to be lower than 100 and 15mg/L, which meets the discharge standards of rural domestic sewage in many places.

The present invention provides a sewage treatment method that uses wind caps to drive rural sewage treatment devices. The device operates with nearly zero power supply to realize efficient treatment of sewage for single households with small water volumes and adjacent to multi-household villages, and solves the problem of zero sewage with small water volumes. Technical requirements for maintenance.

Description of drawings

Fig. 1 Cross-sectional view of joint construction of septic tank and hood-driven rural sewage reactor;

Figure 2 is a flow chart of the joint construction of septic tanks and hood-driven rural sewage reactors;

Fig. 3 is a flow chart of the separate construction of the septic tank and the hood-driven rural sewage reactor;

In the figure: 01, septic tank, 02, hood-driven aerobic reactor, 1, tank body, 2, air outlet pipe, 3, air inlet pipe, 4, packing layer, 5, porous drain plate, 6, baffle , 7. Wind cap, 8. Drainage pipe, 9. Pre-oxygenation tank, 10. Inflatable pipe, 11. Air pump, 12. Water pipe Ⅰ, 13. Water distribution pipe, 14. Solar panel, 15. Support plate, 011, Chemical Stool area 1, 012, septic area 2, 013, water pipe II, 014, ventilation pipe, 015, sewage pipe.

Detailed ways

The technical solution of the present invention will be described in detail below in conjunction with accompanying drawings 1-3 and the embodiments. In the description of the present invention, it should be understood that: the terms "front", "rear", "left", "right" and other words indicating orientation are only for the convenience of describing the present invention, rather than indicating or implying that the referred element must have a specific Orientation, therefore cannot be construed as a specific limitation on the present invention.

Specific implementation mode one:

A hood-driven aerobic reaction sewage treatment device, including a septic tank 01 arranged below the ground and a hood-driven aerobic reactor 02, the hood-driven aerobic reactor 02 includes a tank body 1, an air outlet pipe 2, an inlet Air duct 3, packing layer 4, porous drain plate 5 and baffle plate 6, the tank body 1 is arranged below the ground, and the air outlet duct 2 and the air inlet duct 3 are vertically arranged at the left and right ends of the tank body 1 respectively And communicate with the tank body 1, the air outlet duct 2 and the upper end of the air inlet duct 3 protrude from the ground, the porous drain plate 5 is horizontally arranged inside the tank body 1 and connected with the left side wall and the front and rear side walls of the tank body 1, The packing layer 4 is arranged above the porous drain plate 5, the septic tank 01 communicates with the packing layer 4 through pipes, and the baffle plate 6 is fixed on the right end of the upper surface of the porous drain plate 5 and connected to the upper side of the tank body 1. The wall and the front and rear side walls are connected, and the outlet pipe 2 protruding from the ground is provided with a wind cap 7, and the wind cap 7 rotates under the action of the natural wind, and the air sucked into the air inlet pipe 3 passes through the porous drain board in turn The through hole II of 5 and the packing layer 4 are discharged through the air outlet duct 2.

Further, the hood-driven aerobic reactor 02 also includes a drain pipe 8 , which is connected to the tank body 1 and located below the porous falling water plate 5 .

Further, the hood-driven aerobic reactor 02 also includes a pre-oxygenation tank 9, the pre-oxygenation tank 9 is arranged at the left end of the tank body 1, and the inside of the pre-oxygenation tank 9 is vertically arranged with The inflation pipe 10 protruding above the ground, the inflation pipe 10 is connected with the air pump 11, the side wall of the pre-oxygenation tank 9 is provided with a water inlet and a water outlet, and the water inlet and the septic tank 01 pass through the water pipe I12 is connected, the water outlet is connected to the water distribution pipe 13, and the water distribution pipe 13 is evenly arranged on the upper part of the packing layer 4. Several water distribution holes are uniformly arranged on the pipe wall of the water distribution pipe 13 .

Further, the electric drive of the air pump 11 is driven by the solar panel 14 with electric storage function.

Further, the hood-driven aerobic reactor 02 also includes a support plate 15, which is vertically arranged at the right end of the lower surface of the perforated drain plate 5 and connected with the lower side wall and the front and rear side walls of the tank body 1, so that The support plate 15 is provided with several through holes I.

Further, the filler of the filler layer 4 includes one or a combination of crushed stone and spherical organic filler, and the diameter of the filler is larger than the diameter of the through hole II on the porous drain plate 5 .

Preferably, the packing of the packing layer 4 includes crushed stones and spherical organic fillers, the crushed stones are laid on the bottom, and the spherical organic fillers are laid on the top.

Further, the spherical organic filler includes a flocculent organic material and/or an integral porous hollow spherical material placed inside a porous thin-layer sphere.

Further, the filler of the filler layer 4 also includes biological flora.

Further, the septic tank is divided into the first septic area 011 and the second septic area 012, the first septic area 011 and the second septic area 012 are connected through the water pipe II 013, and the second septic area 012 is passed through The water pipe I12 is connected with the pre-oxygenation tank 9.

Specific implementation mode two

A kind of sewage treatment method that utilizes described a kind of wind cap to drive aerobic reaction sewage treatment device, comprises the following steps:

Step 1: The sewage is discharged into the septic tank 01 through the sewage pipe 015. After solid-liquid separation, the sewage flows into the packing layer 4 of the air cap to drive the aerobic reactor 02 by its own gravity through the pipe. The packing layer 4 contacts with the sewage to form biological membrane;

Step 2: The hood rotates under the action of natural wind from the outside, and the air sucked into the air inlet pipe 3 passes through the through hole II of the porous drain plate 5 and the packing layer 4 in turn, and is discharged through the air outlet pipe 2. The biofilm and sewage In full contact with the air, the microorganisms on the biofilm react aerobically with the organic matter in the sewage to complete the purification of the sewage;

Step 3: The purified sewage moves downward in the form of a water film, and enters the clean water area through the porous drain plate 5 for discharge.

In step 1, the specific flow direction of the sewage flowing into the filling layer 4 of the hood-driven aerobic reactor 02 through the pipeline through its own gravity is: the sewage flows into the pre-oxygenation tank of the hood-driven aerobic reactor 02 through the water pipe I12 through its own gravity 9. The air pump 11 oxygenates the sewage in the pre-oxygenation tank 9 through the inflation pipe 10, and the oxygenated sewage flows evenly into the packing surface of the packing layer 4 through the water distribution pipe 13.

Example 1

Sewage and feces (mixed feces) enter the first septic area 011 and the second septic area 012 through the sewage pipe 015. The feces are deposited at the bottom of the first septic area 011 and the second septic area 012 and are cleaned regularly, and the sewage enters through the water pipe I12 The hood drives the pre-oxygenation tank 9 of the sewage reactor 02, and the air pump 11 feeds air into the pre-oxygenation tank 9 through the inflation pipe 10, and the electric drive of the air pump is completed by the solar panel 14. The sewage prepared for oxygenation is evenly distributed downward through the water distribution pipe 13 with water distribution holes, and sprinkled on the surface of the packing layer 4 packing. The filler in the filler layer 4 contacts with the sewage to form a biofilm, and additional biological flora can also be added to promote the formation of the biofilm. The aerobic reaction gas source of the biofilm is driven by the wind cap 7 . The wind cap 7 above the air outlet pipe 2 will rotate under the action of natural wind, sucking the air from the air inlet pipe 3, the downward sewage from the biofilm and the water distribution pipe 13, and the sewage from the air inlet pipe 3-filling layer 4- The air in the air outlet pipe 2 is in countercurrent contact to complete the aerobic reaction of the sewage and the removal of COD and ammonia nitrogen. The treated sewage continues to move downwards in the form of a water film, and finally enters the clear water area below the porous drain plate 5 through the porous drain plate 5. The porous drain plate 5 is supported by a support plate 15, and the part above the water surface of the support plate 15 is reserved for passage. The hole I ensures that the wind cap driving wind sucks the air from the air inlet duct 3.

The sewage in the clear water area enters the right part of the hood-driven aerobic reactor 02 through the through hole I in the part below the water surface of the support plate 15, and then discharges through the drainage pipe 8 to meet the standard.

The integrated hood with a length of 2.8m and a diameter of 1.2m drives an aerobic reaction sewage treatment device, which can treat 0.5 tons of sewage per day. The operating effect is influent COD312～342mg/L, effluent COD: 93～102mg/L; influent ammonia nitrogen 55～ 61mg/L, effluent ammonia nitrogen 9~13mg/L; influent suspended matter 155~181mg/L, effluent suspended matter 14~19mg/L.

Both the septic tank 01 and the hood-driven aerobic reactor 02 can be made into square, rectangular or ellipsoidal shapes, and the materials can be steel, plastic or fiberglass.

The septic tank 01 and the hood-driven aerobic reactor 02 can be built together as shown in Figure 2, or separately, as shown in Figure 3.

The septic tank 01 and the hood-driven aerobic reactor 02 must meet the requirements of the minimum buried depth and freezing line.

Normal drainage pipe 8 outlet water levels are as still above ground water level when installing, and this device need not external power supply. If the groundwater level of the site is too high to realize gravity drainage of sewage, a suction pump can be placed in the clear water area on the right side of the hood-driven aerobic reactor 02 to discharge.

The design of the suction and oxygen supply method of the hood-driven aerobic reactor 02 is one of the core ideas of the present invention. The inventive concept is: to seal the ventilation pipe 014 arranged above the septic tank 01, and the hood 7 rotates under the drive of natural wind. Inhale the air from the air inlet duct 3 to form the reverse packing layer 4 air channel via "air inlet duct 3-the through hole reserved above the water surface of the support plate 15-filling layer 4-outlet duct 2-wind cap 7" . The air going up along the filler is mixed with the sewage that passes through the filler layer 4 evenly downward through the water distribution pipe 13, and the aerobic biological reaction is completed under the action of the biofilm on the surface of the filler layer 4, thereby removing COD (characterizing organic pollutants) and ammonia nitrogen in the water (nutritional pollutants).

Filling layer 4 can place crushed stone or the mixture of crushed stone and spherical organic filler, but its diameter will be greater than the diameter of through hole II on the porous falling water plate 15 .

The through hole II arranged on the porous drain plate 5 plays the role of falling water entering the clear water area, and the through hole II also plays the role of air flow. During specific implementation, it is ensured that a 10- 20cm distance.

Pre-oxygenation plays the role of auxiliary oxygen supply, which is characterized in that the air pump 11 is driven by the solar panel 14 to aerate in the pre-oxygenation tank 9 to improve the aerobic response capacity of the biofilm.

The biofilm on the surface of the filler layer 4 can be formed slowly through the contact of sewage, and some biological bacteria agents can also be injected externally to improve the start-up process of the reactor.

The above-mentioned embodiments are only exemplary descriptions of the present invention and do not limit its protection scope. Those skilled in the art can also make partial changes to it, as long as they do not exceed the spirit of the present invention, they are all regarded as equivalent replacements of the present invention. Within the protection scope of the present invention.

Claims (10)

1. A hood-driven aerobic reaction sewage treatment device, comprising a septic tank (01) arranged below the ground; it is characterized in that: the hood-driven aerobic reaction sewage treatment device also includes a hood-driven aerobic reactor (02 ), the hood-driven aerobic reactor (02) comprises a tank body (1), an air outlet duct (2), an air inlet duct (3), a packing layer (4), a porous falling board (5) and a baffle ( 6), the tank body (1) is arranged below the ground, the air outlet duct (2) and the air inlet duct (3) are respectively vertically arranged and communicated with the tank body (1), the air outlet duct (2) and the The upper end of the air inlet pipe (3) protrudes from the ground, the porous drain plate (5) is horizontally arranged inside the tank body (1), the packing layer (4) is arranged above the porous drain plate (5), the The septic tank (01) communicates with the packing layer (4) through pipes, and the baffle plate (6) is fixed on the right end of the upper surface of the porous drain plate (5) and connected with the upper side wall and the front and rear side walls of the tank body (1) , the outlet pipe (2) protruding from the ground is provided with a wind cap (7), and the wind cap (7) rotates under the action of natural wind, and the air sucked into the air inlet pipe (3) passes through the porous The through hole II and the packing layer (4) of the falling water plate (5) are discharged through the air outlet duct (2). 2. A hood-driven aerobic reaction sewage treatment device according to claim 1, characterized in that: the hood-driven aerobic reactor (02) also includes a drainpipe (8), and the drainpipe (8) communicates with On the tank body (1) and below the porous drain plate (5). 3. A kind of hood-driven aerobic reaction sewage treatment device according to claim 1, characterized in that: the hood-driven aerobic reactor (02) also includes a pre-oxygenation tank (9), and the pre-oxygenation Groove (9) is arranged on the left end in described tank body (1), and described pre-oxygenation tank (9) interior vertically is provided with the inflation pipe (10) that protrudes above the ground, and described inflation pipe (10) and The air pump (11) is connected, and a water inlet and a water outlet are provided on the side wall of the pre-oxygenation tank (9), and the water inlet is connected with the septic tank (01) through the water pipe I (12), and the outlet The water outlet is connected with the water distribution pipe (13), and the water distribution pipe (13) is evenly arranged on the upper part of the packing layer (4). 4. A hood-driven aerobic reaction sewage treatment device according to claim 3, characterized in that: the electric drive of the air pump (11) is driven by solar panels (14). 5. A hood-driven aerobic reaction sewage treatment device according to claim 1, characterized in that: the hood-driven aerobic reactor (02) also includes a support plate (15), and the support plate (15) It is vertically arranged on the right end of the lower surface of the perforated drain plate (5) and connected with the lower side wall and the front and rear side walls of the tank body (1). The support plate (15) is provided with several through holes I. 6. A kind of wind cap driven aerobic reaction sewage treatment device according to claim 1, is characterized in that: the filler of described packing layer (4) comprises the combination of one or both of gravel and spherical organic filler, so The diameter of the filler will be greater than the diameter of the through hole II on the porous water drain plate (5). 7 . The hood-driven aerobic reaction sewage treatment device according to claim 6 , wherein the spherical organic filler includes flocculent organic material placed inside a porous thin-layer sphere and/or an integral porous hollow spherical material. 8. A hood-driven aerobic reaction sewage treatment device according to claim 1 or 6, characterized in that: the filler of the filler layer (4) also includes biological flora. 9. A kind of sewage treatment method utilizing a kind of hood drive aerobic reaction sewage treatment device according to claim 2, is characterized in that, comprises the following steps: Step 1: Sewage is discharged into the septic tank (01), and after solid-liquid separation, the sewage flows into the packing layer (4) of the aerobic reactor (02) driven by its own gravity through the pipe through the air cap, and the packing layer (4) is mixed with the Sewage contact forms biofilm; Step 2: The hood rotates under the action of natural wind from the outside, and the air sucked into the air inlet duct (3) passes through the through hole II of the porous drain plate (5) and the packing layer (4) sequentially, and passes through the air outlet duct (2) Discharge, the biofilm is in full contact with the sewage and air, and the microorganisms on the biofilm react aerobically with the organic matter in the sewage to complete the purification of the sewage; Step 3: The purified sewage moves downward in the form of a water film, enters the clean water area through the porous drain plate (5), and is discharged outside through the drain pipe (8). 10. The sewage treatment method according to claim 9, characterized in that: in step one, the specific flow direction of the packing layer (4) of the aerobic reactor (02) driven by the pipeline into the hood by the sewage by its own gravity through the pipeline is: The sewage flows into the pre-oxygenation tank (9) of the hood-driven aerobic reactor (02) through the water pipe I (12) by its own gravity, and the air pump (11) feeds the sewage in the pre-oxygenation tank (9) through the aeration pipe (10) Oxygenation, the oxygenated sewage evenly flows into the filler surface of the filler layer (4) through the water distribution pipe (13).